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post #11 of 17 Old 05-28-2013
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Re: Blisters, OMG

if your blisters are size of watermelons, then fix em...lol
most stay at around quarter(25centpiece) size.
if they tunnel or grow larger or hole selves in center(become wet) then fix each one. i did that--isnt fun but it works==the blisters donot affect performance, btw....


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formosa 41, cruising tropics


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post #12 of 17 Old 05-28-2013
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Re: Blisters, OMG

I think I've posted this before, but I consider this guy to be pretty well versed in blisters. David Pascoe has surveryed LOTS of boats and has LOTS of experience as opposed to us here on this forum who have had experiences with one or two boats and a lot of hearsay.
Good information here.
Hull Blisters on Boats and Yachts - by David Pascoe, Marine Surveyor
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post #13 of 17 Old 05-28-2013
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Re: Blisters, OMG

Fixing blisters is very important. If you let them go they will grow over time and damage the first fiberglass layer. If that happens it is a very big job to skin off the damaged fiberglass and replace it.

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post #14 of 17 Old 05-28-2013
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Re: Blisters, OMG

The first fiberglass layer is strand-mat; which is non-structural. The strand-mat is placed beneath the gelcoat to prevent print-through of the fiberglass cloth. The problem with strand-mat is that it will not fully wet with resin and the voids allow moisture to wick in and form blisters. The blister won't continue through the woven glass if it is fully wetted with fiberglass; but if there are voids or non wetted glass beneath the blister it can travel through the skin layer on a cored hull. I'd rather fix the blisters on a cored hull than need to replace/re-core entire sections of hull if the core rots.
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post #15 of 17 Old 01-22-2014
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Re: Blisters, OMG

I've heard talk of barrier coating that can end the blisters, once they are properly fixed. Anyone?
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post #16 of 17 Old 01-22-2014
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Re: Blisters, OMG

barrier coats yes...but its the prep that is expensive and yards want to charhe you in the range oif 5k to simple sand away the outer damaged layer...and charge you another 2-3k in new glass and resin and barrier coat then primer, then antifouling


on the topic of blisters...heres one for you

on myth busters they made a golf ball CAR...

it had better performance and less drag than the smooth version so whoever makes a golf ball underbody or hull underwater has my nod first

just sayin till you try you cant say blisters affect hull ´performance its totally dumb...in fact probably quite the opposite, jajajaja

and a huge money maker!

for example doing a barrier job on some old plastic classic thats worth 1k makes about as much sense as buying a new boat from westmarine with their fantastic prices ajajajajajajajajajajaja

peace

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post #17 of 17 Old 01-22-2014
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Re: Blisters, OMG

Fix your blisters you'll be glad you did . Come on It's fun !
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